Keep calm and listen, okey?
Try checking your internet connection, that little group of bars at the bottom right of your computer, if not, click that little arrow if you don't see it. It should show up. If it's on one bar or two, you may have to:
1. Disconnect and reconnect.
2. Wait.
3. Restart your router. If you don't know what that is, just ask someone around your house who'd know.
If it's perfectly fine, disconnect and reconnect it anyway. If the problem proceeds, try changing your rendering system.
~Hope this helped.